ELANT EL4101CU Datasheet
EL4101C - Preliminary
500MHz Video Front End - 4:1MUX + DC-Restore
EL4101C - Preliminary
Features
• 4:1 multiplexer with monitor out
• DC-restore amplifier
• ±5V operation
• 500MHz bandwidth
Applications
• HDTV/DTV analog inputs
• Video projectors
• Computer monitors
• Set top boxes
• Security video
• Broadcast video equipment
Ordering Information
Part No. Package Tape & Reel Outline #
EL4101CU 24-Pin QSOP MDP0040
General Description
The EL4101C VFE (Video Front End) is designed to perform the basic
input processing functions in an analog video system as well as provide
analog input processing for digital video systems. The EL4101C VFE
contains a 4:1 MUX input and a DC-restore amplifier. The MUX input
can be used to select which input to use. The DC-restore allows the
input signal to be positioned to the correct voltage level for either analog or digital processing. A buffered output of the MUX selection is
also available for use as a monitor output.
With a 500MHz bandwidth and only 40mA supply current, the
EL4101C is ideal for use in portable and fixed projectors, as well as
HDTV, DTV and other high performance video applications.
The EL4101C is available in the 24-pin QSOP package and is specified
for operation over the full -40°C to +85°C temperature range.
Connection Diagram
SIG0
SIG1
SIG2
SIG3
HPULSE
+5V
1
HOLD
2
GNDL2
3
IN0
4
VS1+
5
IN1
6
GNDI
7
IN2
8
-5V
VS1-
9
IN3
CAP
DCREF
DCFDBK
VFDBK
VOUT
VS2+
VS2-
MOUT
MFDBK
24
23
DCV
22
21
20
19
+5V
18
-5V
17
16
0.33µF
R
GV
R
FV
Video Out
RLV=150Ω
Monitor Out
R
RLM=150Ω
FM
R
GM
10
N.C.
11
LOGICD0
LOGICD1
Note: Pin #6 should be a good high frequency ground
Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.
© 2001 Elantec Semiconductor, Inc.
D0
12
D1
GNDL
PDWN
N.C.
15
14
LOGICPD
13
August 9, 2001
EL4101C - Preliminary
500MHz Video Front End - 4:1MUX + DC-Restore
Absolute Maximum Ratings (T
Values beyond absolute maximum ratings can cause the device to be prematurely damaged. Absolute maximum ratings are stress ratings only
and functional device operation is not implied.
Supply Voltage (VS+ to VS-) 11V
EL4101C - Preliminary
Input Voltage VS- - 0.3V, VS+ +0.3V
= 25°C)
A
Storage Temperature Range -65°C to +150°C
Ambient operating Temperature -40°C to +85°C
Operating Junction Temperature 125°C
Power Dissipation See Curves
Important Note:
All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are at the
specified temperature and are pulsed tests, therefore: TJ = TC = TA.
Electrical Characteristics
VS1+ = VS2+ = 5V, VS1- = VS2- = -5V, R
Parameter Parameter Description Conditions Min Typ Max Unit
Supply
IS1+ Positive Supply Current 1 25 mA
IS- Negative Supply Current 38 mA
IS2+ Positive Supply Current 2 VIN = 0, IL = 0 15 mA
I
+ Positive Supply Current 1 in Standby Standby 3.8 mA
S1S
ISS- Negative Supply Current in Standby Standby 2 mA
I
+ Positive Supply Current 2 in Standby Standby 236 µA
S2S
Input
I
B
I
BO
V
IH
V
IL
I
IL
I
IH
t
SH
Input Bias Current VIN = 0V -22.4 -2.2 6.1 µA
Input Bias Current Drift with Temp. VIN = 0V TBD nA/°C
Input High Voltage 2 V
Input Low Voltage 0.8 V
Low Input Current for D0, D1, PDWN, HOLD VIN = 0V 25 48 75 µA
High Input Current for D0, D1, PDWN, HOLD VIN =5V 0 - 10 µA
Sample and Hold Delay Time 12 ns
Output
V
OSM
V
OS
δV
OS
V
OH
V
OL
I
SC
Output Offset Voltage - Monitor VIN = 0V -400 18 420 mV
DC-restore Offset Voltage Auto-zero on, DC
Output Offset Voltage Drift - Video Auto-zero on TBD µV/°C
Output Voltage Swing, Pos. AV = +1, monitor & video outputs 3.44 3.5 V
Output Voltage Swing, Neg. AV = +1, monitor & video outputs -3.43 -3.5 V
Output Short Circuit Current RL = 10Ω, source or sink 65 100 140 mA
AC Performance
SR Slew Rate - Video Out (20%-80%) V
SRM Slew Rate - Monitor Out (20%-80%) V
OS Output Overshoot, Video V
OSM Output Overshoot, Monitor V
t
t
V
t
V
V
I
I
S
SM
REF
SD
OHS
OSB
CCL
DC
Settling Time to 1%, Video Hold mode 10 ns
Settling Time to 1%, Monitor 10 ns
DC-restore -Reference Voltage Range VIN = -2V to +2V -2 - 2 V
DC-restore - Settling Time to 1% Sample mode on 2.5 µs
DC-restore - Video Output Hold Step S - H transition -0.5 mV
DC-restore - Offset vs. Black Level Sample mode on -1 -0.6 1 mV/V
DC-restore - Charge Current Limit, I
DC-restore - Droop Current, I
= RGV = RFM = RGM =375, R
FV
CAP
CAP
= RLM = 150Ω, CLV = CLM = 3p, CH = 0.33n, GAIN = 2.
LV
= 0 -5 - 5 mV
REF
OUT
OUT
OUT
OUT
= 4V
= 4V
= 1V
= 1V
P-P
P-P
P-P
P-P
1000 2100 4500 V/µs
1250 2100 3900 V/µs
TBD %
TBD %
Sample mode on 210 260 345 µA
Hold mode on -30 - 30 nA
2
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